What is the main cause of volcanic eruptions?
The main cause of volcanic eruptions is the build-up of pressure within the magma chamber beneath the volcano. As magma (molten rock) rises through the Earth's crust, it pushes against the overlying rock and creates pressure. When the pressure becomes too volcanic eruption occurs. When the pressure gets too high, the magma is forced up through the volcano's vents and erupts. This can cause significant damage to the surrounding area and even lead to loss of life.